Home / 1,288,815.04-1,779,211.20-805,648.96

Finding the Fourth Proportional to 1,288,815.04, 1,779,211.20 and 805,648.96

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Solution

The fourth proportional to 1,288,815.04, 1,779,211.20 and 805,648.96 is: 1,112,199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,815.04 : 1,779,211.20 = 805,648.96 : x
  2. Step 2: Convert to fraction form
    1,288,815.04/1,779,211.20 = 805,648.96/x
  3. Step 3: Cross multiply
    1,288,815.04x = 1,779,211.20 × 805,648.96
  4. Step 4: Simplify right side
    1,288,815.04x = 1,433,419,652,900.35
  5. Step 5: Solve for x
    x = 1,433,419,652,900.35/1,288,815.04
  6. Step 6: Final answer
    x = 1,112,199.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.